For me (Amateur) the EOS 600D is more improved 500D, but not the next generation.
Still five stars because the 500D is already a full-fledged camera for demanding hobby Knippser. An alternative is to 60D, which appears over and over again for the price of a 600D in the market.
The swiveling display I think is useful, but hope for us that Canon will not obstruct touchscreens in the next time.